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J. HEAD. STARTING GEAR FOR HIGH SPEED ROTARY MACHINES.

No. 478,541. Patented July 5,1892.

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UNITE STATES Flxrmvr FFI'CE.

JOHN HEAD, OF KING W'ILLIAMS TOWN, CAPE COLONY, ASSIGNOR. OF ONE- HALFTO HENRY OKELLY WEBBER, OF SAME PLACE.

STARTING-GEAR 'FOR HIGH-SPEED ROTARY MACHINES.

SPECIFICATION forming part of Letters Patent No.478,541, dated July 5,1892.

Application filed September 25, 1891. Serial No. 406,828., (No model.)

To all whom it may concern.-

Beit known that I, JOHN HEAD, a subject of the Queen of Great Britain,residing at King WVilliams Town, Cape Colony, South Africa, haveinvented certain new and useful Improvements in and Relating toStarting-Gear for High-Speed Rotary Machines, of which the following isa specification.

My invention relates to' improvements in and relating to starting-gearfor high-speed rotary machines-such as centrifugal hydroextractors andthe like-operated by spindles driven through gearing and where two ormore such machines are disposed in proximity to one another.

The object of my improvements is to utilize the power accumulated in onemachine revolving at a high rate of speed for the purpose of overcomingthe inertia and starting a second rotary machine and for transmittingpower from the second to a third, and so on. This accumulated power, sofar as I know, when a machine has done its work has hitherto beenneglected or wasted on the brake.

I attain my object by the mechanism illustrated in the accompanyingdrawing, in which is shown an elevation of a pair of hydro-extractors orcentrifugal wringingmachines having my invention applied thereto.

Similar letters refer to similar parts.

A A are two machines, and a a are their central spindles, havingfriction-cones b b at their upper ends driven alternately by bevelwheelsB B, fixed to power-shafts S S, carrying pulleys s s, driven by beltingor otherwise. The shafts S Sare carried in bearings f f upon a frame oryoke F, fixed to and above the machines A A. In applying my invention Idispose in close proximity to the spindle-cones b b acorrespondingly-coned independent or idle wheel K of such diameterthat'it will simultaneously gear with both (or three or four, if therebe three or four machines grouped) the spindle-cones b b. For throwingwheel K in and out of gear I may make the foot of its spindle is concaveand mount it upon a pointed shaft M, working in and out of gear with thecones b b the shafts S S are traversed in their bearings by fixedclutches J J, with which engage the forks ll of levers L L, centered onframe F and simultaneously moved through connecting-rod L by lever H,centered at hon the frame. The lever H is operated by screw 9 andhandwheels G G, supported in a bracket-bearing g on'frame F. On thebottom limb of said bracket the words On and Off are or may beinscribed, and an index-finger h is or may be fixed to the foot of leverH.

When one machine, say A, is at work, the next A is made ready to start,and at the proper time the running machine is disconnected from itsdriver B by sliding lever H to left by hand-wheel G until the finger hpoints to off. The starting-wheel K is then thrown into gearsimultaneously with both the running cone 1) and the stationary cone 1).The momentum of the former b is then transmitted to the latter I) andstarts it from rest. When both machines are revolving at the same speed,the wheel K is lifted out of gear andthe driver B is geared with thecone 1) by moving. the levers L, L and H in the reverse direction tothat above described. The machine A is then driven at normal speed, themomentum of the running machine A having thus been utilized to start it.To prevent oil running down the spindles a a, I may provide metalreceivers, such as N, thereupon.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The starting-gear for high-speed rotary machines, consisting in thecombination, with the bevel-gear for driving alternately a plurality ofsuch machines, of an independent bevel-wheel K, adapted to gearsimultaneously with a pluralityof driving-spindle cones,

and disconnecting mechanism, Substantially as set forth.

2. The combination, with'the coned driving-spindles, driving-wheels B B,sliding 5 shafts S S, levers H L L L and hand-gear G G for operatingsame, of starting-wheel K, provided with operating-gear, allsubstantially as and for the purposes set forth.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

JOHN HEAD.

Witnesses:

JOSEPH C. CHAPMAN, C. P. A., London.

JOSEPH LAKE, 17 Gracechmch Street, London, E. O.

